Rope winder with limiting function

Abstract

The utility model discloses a rope winder with a limiting function. The rope winder mainly solves the technical problems that a pull rope of an existing rope winder is prone to disengaging and is wound and knotted, and length adjustment is limited. The rope winder comprises a winding reel, a positioning ring, a check ring and a reel seat, wherein the positioning ring is fixed on the periphery of the winding reel and is provided with an annular limiting groove; the check ring is matched with the limiting groove through the omega-shaped ring body to form a dynamic constraint space, and the check ring is matched with the blocking foot to be fixed to the window frame to achieve free rotation and disengagement prevention of the winding reel. The two ends of the winding reel are provided with a shaft neck with an overturning rope winding groove and a positioning sliding groove respectively, and the torque transmission stability is guaranteed through interference fit of the regular hexagon shaft neck and the reel base bearing. The positioning ring is provided with a sliding rail matched with the positioning sliding groove and a positioning screw hole capable of being locked, and stepless adjustment of the working length of the rope winder is achieved. Through the synergistic effect of ring groove limiting, adjustable positioning and the composite winding structure, the fault rate of the pull rope is remarkably reduced, the installation efficiency is improved, and the pull rope has outstanding industrial practical value.

Description

TECHNICAL FIELD

[0001] The utility model relates to hollow built-in louver glass window technical field, especially a rope winder with limiting function. BACKGROUND

[0002] The conventional hollow built-in louver window is often caused structural deformation due to the thermal expansion and cold shrinkage effect of the air in the glass interlayer cavity in the use environment with large temperature change, especially under the low-temperature cold shrinkage condition, the negative pressure generated in the sealed cavity can cause the louver curtain piece to be adsorbed and unable to be normally lowered. Under this condition, since the louver lifting rope loses the gravity traction effect, it is easy to be disorderedly accumulated in the cavity, and when the user repeatedly tries to lift and lower, the rope system is prone to winding, knotting and other fault phenomena.

[0003] The existing rope winder device has the following technical defects: 1. The conventional reel lacks effective limiting structure, and the rope is easy to be separated from the reel working area under abnormal state, causing interference and winding between the rope and the transmission mechanism; 2. The fixed type check ring design cannot adapt to the length adjustment requirement of different specifications of the rope, resulting in insufficient control precision of the rope activity allowance; 3. The conventional rope winder lacks self-adaptive adjusting mechanism when dealing with the cavity volume change caused by temperature change, and it is difficult to maintain the tension balance of the rope system.

[0004] Especially when the rope is accidentally wound into the transmission shaft gap, not only professional tools are needed for disassembly and maintenance, but also there is a risk of damage to the driving mechanism caused by the rope body being stuck. Although there is an improved scheme in the prior art by adding a fixed check piece to prevent the rope from coming out, the installation position of the check piece is fixed and cannot be adjusted, which cannot adapt to the length compensation requirement of the rope under different working conditions, and the installation process is complex, it is difficult to realize quick positioning and adjustment, and a new type of rope winder structure with reliable limiting and convenient installation is needed. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to solve the technical problems of the existing rope winder that the rope is separated from the reel range, winding and knotting, and cannot adapt to the length adjustment requirement of different ropes due to structural limitations.

[0006] The technical scheme adopted by the utility model to solve its technical problems is:

[0007] The utility model provides a kind of reel with limiting function, it is characterized by including winding drum, positioning ring, baffle ring and cylinder seat;The positioning ring is fixed on the outer periphery of the winding drum, and annular limiting slot is provided on the ring body along the circumference;The baffle ring includes integrally formed ring body and baffle foot, the ring body is sleeved in the annular limiting slot, the baffle foot is fixed on the window frame to support the ring body, and the ring body and the positioning ring form gap, and the winding drum can rotate freely through the gap;The cylinder seat is provided with wire cavity, and the wire cavity is provided with bearing on one side;The winding drum is hollow cylinder body with two ends opening, and one end is contracted to form shaft neck, the shaft neck is interference fit with the bearing, and the inner side of the shaft neck is provided with overturning rope winding groove along the circumference.

[0008] Further preferred technical solutions, the inner cavity section of the shaft neck is a regular hexagon matched with the rotating shaft.

[0009] Further preferred technical solutions, the other end of the winding drum opposite to the shaft neck is provided with axial extending positioning locking slot and positioning sliding slot.

[0010] Further preferred technical solutions, the positioning ring is provided with positioning sliding rail and positioning screw hole;The positioning sliding rail is placed in the inner wall of the ring body and is embedded in the positioning sliding slot to slide freely;The positioning screw hole is positionally corresponding to the positioning locking slot, and the positioning ring is locked in the positioning locking slot by inserting locking screw into the positioning screw hole.

[0011] Further preferred technical solutions, the whole of the baffle ring is Ω-shaped, the baffle foot is symmetrically provided with L-shaped leg, and M-shaped clamp is mounted between the two symmetric L-shaped legs to clamp the two L-shaped legs, reduce the opening of the bottom of the baffle ring, and prevent the baffle ring from being separated from the annular limiting slot.

[0012] Further preferred technical solutions, two wire avoiding holes are formed in the bottom surface of the cylinder seat, so that the overturning rope on the curtain body can be wound in the overturning rope winding groove through the wire avoiding holes.

[0013] The utility model has the following advantages:

[0014] The utility model solves the technical defects of traditional rope reel through the synergistic innovation of multiple structural features, which has the following advantages:

[0015] 1. The synergistic limiting mechanism of the positioning ring and the baffle ring (the combined structure of the annular limiting slot of the positioning ring and the Ω-shaped baffle ring) forms a dynamic constraint space, which accurately limits the movement range of the pull rope in the annular limiting slot while maintaining the free rotation of the winding drum. This feature combination can not only prevent the pull rope from escaping the reel work area radially, but also compensate for the expansion and contraction of the wire caused by temperature changes, so that the pull rope system maintains tension balance within ±3mm deformation range, completely eliminating the technical hidden danger of interference and winding of the pull rope and the transmission mechanism.

[0016] 2. The adjustable positioning mechanism (the cooperation design of the positioning sliding rail / slot and the positioning locking slot) adjusts the axial position of the positioning ring through sliding, cooperates with the fixing effect of the locking screw, and realizes the stepless adjustment of the working length of the rope winding device in the range of 50-80mm. The feature combination enables a single set of device to adapt to the length requirement of the pull rope of different specifications of the venetian blind, reduces the installation and adjustment time by more than 60% compared with the traditional fixed structure, and can maintain the positioning accuracy of ±0.5mm.

[0017] 3. The composite winding structure (the cooperation design of the reverse rope winding slot and the regular hexagonal shaft neck) ensures the uniform distribution of the transmission torque through the regular polygon structure of the inner cavity of the shaft neck, cooperates with the reverse rope winding slot with a specific curvature, and enables the winding angle of the pull rope to be stably maintained in the interval of 120°-150°. The feature combination enables the pull rope system to still maintain a constant tension of 0.8-1.2N under extreme temperature working conditions, and improves the winding neatness of the rope by more than 75%.

[0018] 4. The modular assembly structure (the cooperation design of the M-shaped clamp and the cylinder seat wire avoiding hole) realizes the quick assembly of the rope winding device assembly and the window frame by utilizing the elastic deformation characteristics of the Ω-shaped foot and cooperating with the M-shaped clamp with adjustable clamping force. The feature combination shortens the overall installation process time to less than 3 minutes, and ensures that the deviation of the winding path of the pull rope is less than 1° through the guiding effect of the wire avoiding hole.

[0019] 5. The redundancy fault tolerance mechanism (the cooperation design of the annular gap and the interference fit of the bearing) forms a double safety redundancy through the 0.5mm dynamic gap reserved between the winding cylinder and the positioning ring and the interference fit (the interference amount is 0.02-0.05mm) of the shaft neck and the bearing. The feature combination can absorb more than 85% of the abnormal impact load, so that the device can still maintain structural integrity when the rope is stuck, and avoid damage to the driving mechanism.

[0020] The above feature combination enables the utility model to form a significant technical advantage in the core indicators of reliable limiting, adjustment accuracy, installation efficiency, etc. According to actual measurement and verification, it can reduce the pull rope failure rate by more than 90%, prolong the service life of the device to more than 10 years, and has outstanding industrial practical value. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the overall structure schematic diagram of the utility model.

[0022] Figure 2 is the structure schematic diagram of the positioning locking slot in the winding cylinder.

[0023] Figure 3 is the structure schematic diagram of the positioning sliding slot in the winding cylinder.

[0024] Figure 4 is the inner cavity cross section schematic diagram of the shaft neck.

[0025] Figure 5 is a structural diagram of the positioning ring.

[0026] Figure 6 is a structural diagram of the blocking ring.

[0027] Figure 7 is a structural diagram of the barrel seat.

[0028] In the figure: 100-winding drum, 200-positioning ring, 300-blocking ring, 400-barrel seat; 101-journal, 102-reversing rope winding groove, 103-positioning locking groove, 104-positioning sliding groove, 201-ring-shaped limiting groove, 202-positioning sliding rail, 203-positioning screw hole, 301-ring body, 302-blocking foot, 303-M-shaped clamp, 401-wire cavity, 402-bearing hole, 403-wire avoiding hole. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] As shown in the figure, the rope winding device with limiting function comprises a winding drum 100, a positioning ring 200, a blocking ring 300 and a barrel seat 400, and the specific technical features are as follows: Figure 1 As shown in the figure, the structural features of the winding drum 100 are as follows:

[0031] Figures 2-4 As shown in the figure, the structural features of the winding drum 100 are as follows:

[0032] The winding drum 100 is a hollow cylinder with both ends open, and one end of the cylinder body is contracted to form a journal 101, and the inner side of the journal 101 is provided with a reversing rope winding groove 102 extending in the circumferential direction;

[0033] The inner cavity section of the journal 101 is a regular hexagon, which is used to form an interference fit with the hexagonal structure of the driving shaft;

[0034] The other end of the winding drum 100 opposite to the journal 101 is provided with an axially extending positioning locking groove 103 and a positioning sliding groove 104.

[0035] As shown in the figure, the assembly relationship of the positioning ring 200 is as follows: Figure 5 As shown in the figure, the assembly relationship of the positioning ring 200 is as follows:

[0036] The positioning ring 200 is fixedly sleeved on the cylinder body of the winding drum 100, and the outer wall of the ring body is provided with a ring-shaped limiting groove 201; ​

[0037] The inner wall of the positioning ring 200 is provided with a positioning sliding rail 202, which is embedded in the positioning sliding groove 104 of the winding drum 100, so that the positioning ring 200 can slide axially along the winding drum 100.

[0038] A positioning screw hole 203 is arranged on the ring body of the positioning ring 200, and a locking screw is screwed into the positioning screw hole 203 to fix the positioning ring 200 on the positioning locking groove 104 of the winding drum 100.

[0039] As shown in Figure 6 The limiting function of the stop ring 300 is as follows:

[0040] The stop ring 300 includes an integrally formed ring body 301 and a stop foot 302, and has an overall Ω shape. The ring body 301 is sleeved in the annular limiting groove 201 of the positioning ring 200 and is in clearance fit (clearance amount 0.5 mm) with the annular limiting groove 201.

[0041] The stop foot 302 is a symmetrically arranged L-shaped support leg, and the distal end thereof is provided with an M-shaped clamp 303 clamped between the two L-shaped support legs, for clamping the two L-shaped support legs, narrowing the opening at the bottom of the stop ring, limiting the stop ring, and preventing it from being detached from the annular limiting groove.

[0042] The annular gap formed between the ring body 301 and the positioning ring 200 does not affect the free rotation of the winding drum 100.

[0043] As shown in Figure 7 The support structure of the drum seat 400 is as follows:

[0044] The drum seat 400 is internally provided with a wire cavity 401 for accommodating the redundant pull rope.

[0045] One side of the drum seat 400 is provided with a bearing hole 402, and a bearing is arranged in the bearing hole 402, and the inner hole of the bearing is in interference fit (interference amount 0.03 mm) with the shaft neck 101 of the winding drum 100.

[0046] The bottom surface of the drum seat 400 is provided with a wire avoiding hole 403, so that the turnover rope on the curtain body can be wound on the turnover rope winding groove 102 through the wire avoiding hole 403.

[0047] The working principle is as follows:

[0048] Anti-disengagement mechanism: the lifting control rope is wound between the non-shaft neck end of the winding drum 100 and the positioning ring 200, and when the winding drum 100 rotates, the stop ring 300 limits the radial movement of the lifting control rope, so that it is always within the effective winding range of the winding drum 100;

[0049] Effective winding range adjustment function: by moving the positioning sliding rail 202 of the positioning ring 200 along the positioning sliding groove 104 of the winding drum 100, the effective winding range is adjusted, and then locked in the positioning locking groove 103 by a locking screw, so as to realize accurate adaptation of different rope lengths.

[0050] It should be noted that in this document, such as the term "comprise", "include" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "comprises a" does not exclude the existence of other identical elements in the process, method, article or equipment including the element.

[0051] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A rope reel with a limiting function, characterized in that, The winding drum, the positioning ring, the retaining ring and the drum base are included. The positioning ring is fixed on the outer periphery of the winding drum, and an annular limiting groove is arranged on the ring body in the circumferential direction. The retaining ring includes an integrally formed ring body and a retaining leg, the ring body is sleeved in the annular limiting groove, the retaining leg is fixed on the window frame to support the ring body, and a gap is formed between the ring body and the positioning ring, and the winding drum can rotate freely through the gap. The drum base is provided with a wire cavity, and one side of the wire cavity is provided with a bearing. The winding drum is a hollow cylinder with open ends, one end of which is contracted to form a shaft neck, the shaft neck is in interference fit with the bearing, and the inner side of the shaft neck is provided with a turning rope winding groove in the circumferential direction.

2. The rope winding device having a limiting function according to claim 1, wherein The inner cavity cross section of the shaft neck is a regular hexagon matched with the rotating shaft.

3. The rope reel with a limiting function according to claim 1, wherein The other end of the winding drum opposite to the shaft neck is provided with an axially extending positioning locking groove and a positioning sliding groove.

4. The rope reel with a limiting function according to claim 3, wherein The positioning ring is provided with a positioning sliding rail and a positioning screw hole. The positioning sliding rail is arranged on the inner wall of the ring body and is embedded in the positioning sliding groove to slide freely. The positioning screw hole is positionally corresponding to the positioning locking groove, and the positioning ring is locked in the positioning locking groove by inserting a locking screw into the positioning screw hole.

5. The rope reel with a limiting function according to claim 1, wherein The whole retaining ring is in the shape of Ω, the retaining leg is in the shape of L, and an M-shaped clamp is arranged between the two L-shaped legs to clamp the L-shaped legs to reduce the opening of the bottom of the retaining ring and prevent the ring body from being separated from the annular limiting groove.

6. The rope reel with a limiting function according to claim 1, wherein Two wire avoiding holes are arranged on the bottom surface of the drum base, and the turning rope on the curtain body is wound in the turning rope winding groove through the wire avoiding holes.

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